Hi Jen,
Pick a night if possible with a 4-odd day moon. Non-astronomers love to look at the Moon it just totally blows them away. Saturday 8th January is the pick. View the Moon in the west as twilight settles in, then Jupiter before it begins to get too low in deep twilight.
Rob mentioned many lovely objects, but omitted several really nice Open Clusters situated perfectly not long after darkness drops -- M46, M47 and NGC 2362 (Tau Canis Majoris cluster). The Pleiades and M44 are good but are better for big-binoculars than a telescope.
There's some good info here on the clusters I mentioned above:
http://messier.obspm.fr/m/m046.html
http://messier.obspm.fr/m/m047.html
http://messier.obspm.fr/xtra/ngc/n2362.html
that if you can memorise a bit of and spiel it off (how far, how many stars, how old) as they view will have you looking like an absolute astronomy genius.
Make sure you also show then 47 Tucanae, M42 and the Tarantula Nebula (NGC 2070). Theta Eridani (as already mentioned) is a superb, moderately wide pair easily split at low power.
Drink
one and one only only burbon and coke before you use the 'scope (just so you're loosened up enough to do it all comfortably but not tanked) and when finished with the sky and the 'scope's away you can get well-oiled enough that by midnight, it will seem like a brilliant idea to both you and your guests to lie-down on the ground in the backyard (in the dark) (looking up hopefully) and enjoy the naked-eye Milky Way after moonset.
Have a great night. Hope the clouds do the right thing !
Best,
Les D